Dyfyniad APA

(1998). On-farm management of applied inputs and native soil fertility. Philippines: IRRI.

Dyfyniad Arddull Chicago

On-farm Management of Applied Inputs and Native Soil Fertility. Philippines: IRRI, 1998.

Dyfyniad MLA

On-farm Management of Applied Inputs and Native Soil Fertility. Philippines: IRRI, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.